/*
 * Copyright (c) 2007, 2015, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*
 * Copyright 1999-2002,2004 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.sun.org.apache.xerces.internal.dom;

/**
 * Text nodes hold the non-markup, non-Entity content of
 * an Element or Attribute.
 * <P>
 * When a document is first made available to the DOM, there is only
 * one Text object for each block of adjacent plain-text. Users (ie,
 * applications) may create multiple adjacent Texts during editing --
 * see {@link org.w3c.dom.Element#normalize} for discussion.
 * <P>
 * Note that CDATASection is a subclass of Text. This is conceptually
 * valid, since they're really just two different ways of quoting
 * characters when they're written out as part of an XML stream.
 *
 * @xerces.internal
 * @since PR-DOM-Level-1-19980818.
 */
public class DeferredTextImpl
    extends TextImpl
    implements DeferredNode {

  //
  // Constants
  //

  /**
   * Serialization version.
   */
  static final long serialVersionUID = 2310613872100393425L;

  //
  // Data
  //

  /**
   * Node index.
   */
  protected transient int fNodeIndex;

  //
  // Constructors
  //

  /**
   * This is the deferred constructor. Only the fNodeIndex is given here.
   * All other data, can be requested from the ownerDocument via the index.
   */
  DeferredTextImpl(DeferredDocumentImpl ownerDocument, int nodeIndex) {
    super(ownerDocument, null);

    fNodeIndex = nodeIndex;
    needsSyncData(true);

  } // <init>(DeferredDocumentImpl,int)

  //
  // DeferredNode methods
  //

  /**
   * Returns the node index.
   */
  public int getNodeIndex() {
    return fNodeIndex;
  }

  //
  // Protected methods
  //

  /**
   * Synchronizes the underlying data.
   */
  protected void synchronizeData() {

    // no need for future synchronizations
    needsSyncData(false);

    // get initial text value
    DeferredDocumentImpl ownerDocument =
        (DeferredDocumentImpl) this.ownerDocument();
    data = ownerDocument.getNodeValueString(fNodeIndex);

    // NOTE: We used to normalize adjacent text node values here.
    //       This code has moved to the DeferredDocumentImpl
    //       getNodeValueString() method. -Ac

    // ignorable whitespace
    isIgnorableWhitespace(ownerDocument.getNodeExtra(fNodeIndex) == 1);

  } // synchronizeData()

} // class DeferredTextImpl
